Mercerizing Or Alkaline Treatment Patents (Class 8/125)
  • Patent number: 9597111
    Abstract: The present invention generally relates to methods for applying a skin graft. Methods of the invention involve harvesting an epidermal skin graft, and applying the epidermal skin graft to a recipient site such that the basal layer of the skin graft makes direct contact with the recipient site.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: March 21, 2017
    Assignee: KCI Licensing, Inc.
    Inventors: Sameer Ahmed Sabir, M Josh Tolkoff, Andrew Ziegler
  • Patent number: 8220470
    Abstract: The Furniture Pad Folding Machine is a dry cleaning machine that is multi-faceted; it can clean and disinfect furniture pads and the machine has the ability to fold furniture pads. The machine is portable and can function on the moving truck and at the warehouse.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: July 17, 2012
    Inventor: Jessie Lee Hicks
  • Patent number: 8177859
    Abstract: The present invention is directed to methods for flameproofing cellulose fibres and articles containing these fibres. The method involves treatment of materials with cyanuric chloride.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: May 15, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Manfred Schmidt, Stephanie Schauhoff, Frank Gähr
  • Patent number: 7854847
    Abstract: Systems and methods for purifying wood pulp by caustic-borate extraction. The systems and method include a method for recovering both the caustic and borate compounds from the resultant hemicaustic effluent, so that they may be recycled and re-used. Efficient recovery of these components is enabled by a nanofiltration system that has one or more alkali-resistant nanofiltration membranes.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: December 21, 2010
    Assignee: Rayonier TRS Holdings Inc.
    Inventor: Jian Li
  • Publication number: 20100024134
    Abstract: Durable stretch fabrics are made and processed from one or more crosslinked, heat-resistant olefin elastic fibers, e.g., a substantially linear, homogeneously branched ethylene polymer. The fabrics can be made by any process, e.g., weaving, knitting, etc., and from any combination of crosslinked, heat-resistant olefin elastic and inelastic (“hard”) fibers, e.g., cotton and wool. These fabrics exhibit excellent chemical, e.g., chlorine, resistance and durability, e.g., they retain their shape and feel (“hand”) over repeated exposure to processing conditions, e.g., stone-washing, dye-stripping, PET-dyeing and the like, and service conditions, e.g., washing, drying, etc.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 4, 2010
    Applicant: Dow Global Technologies Inc.
    Inventors: Rona L. Reid, Thoi H. Ho, Selim Bensason, Rajen M. Patel, Antonio Batistini
  • Patent number: 7195695
    Abstract: The invention provides a method for preparing cross-linked cellulosic fibers. A sheet of cellulosic fibers treated with a caustic solution under non-mercerizing conditions is cross-linked with a solution containing polymeric polycarboxylic acid cross-linking agents. The treated cellulosic fibrous material is dried and cured in sheet form to promote intrafiber cross-linking. Cross-linked fiber products of this method, which is economic, that possess good absorption and wet resiliency properties are also disclosed.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: March 27, 2007
    Assignee: Rayonier Products & Financial Services Company
    Inventors: Karl D. Sears, W. Jason Cooper, Tina R. Murguia
  • Patent number: 6896810
    Abstract: Systems and methods by which to subject cellulosic fibers to alkaline treatment are provided. The systems and methods of the invention include equipment, such as nanofiltration units and slurry concentrators, which result in a lowered overall consumption of alkaline solution during alkaline treatment. The systems and methods of the invention further allow the components of hemicaustic streams produced by such alkaline treatments to be utilized in higher value end uses.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: May 24, 2005
    Assignee: Rayonier Products and Financial Services Company
    Inventors: Omar F. Ali, John T. Cenicola, Jian Li, Jay D. Taylor
  • Patent number: 6839945
    Abstract: The invention relates to a method for preparing a moisture barrier fabric comprising needing the fabric in a direction substantially opposite to the advance direction of the fabric with barbed needles to increase the density of the fabric by entangling the fibers thereof, open-width washing of the needled facecloth fabric with a detergent and sodium carbonate to further increase fabric density by allowing the fabric to neck down or bulk at a substantially random rate, coating one side of the fabric with at least one coating of a latex formulation for use in forming the backcoating of the moisture barrier fabric, comprising a (meth)acrylic acid urethane copolymer having a curing temperature of approximately 250 to 275° F., and immersing the dry moisture barrier fabric, including the latex backing, into a bath of fluorochemical and solution containing about 10 to about 15 wt % polyurethane, and removing excess fluorochemical from the treated fabric.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: January 11, 2005
    Assignee: Chatham, Inc.
    Inventors: Jeffrey D. Irwin, Christopher M. Harmon, Steven D. Daniels
  • Patent number: 6814759
    Abstract: Stable cellulosic fiber material for use in forming zeolite/cellulose composites is prepared by suspending loose cellulose fibers in an aqueous solution of sodium hydroxide, potassium hydroxide or sodium silicate, stirring the resulting suspension until it reaches a macroscopically homogenous appearance, heating the resulting mixture at a temperature of 323-423 K until only dry solids remain, contacting the resulting mixture with excess distilled water to remove physically adsorbed or trapped sodium hydroxide, potassium hydroxide or sodium silicate from the fibers, and heating the resulting fiber material at 323-423 K to dry the fiber material. Stable zeolite/cellulose composite material characterized in that leaching of the zeolite phase does not occur upon contact of the composite with water at approximately 373 K comprises a zeolite and a stable cellulosic fiber prepared as described above, the composite material being formed by contacting a zeolite with the stable fiber material.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: November 9, 2004
    Assignees: Board of Regents of the University of Nebraska, Kraft Foods Inc.
    Inventors: Gustavo Larsen, David Vu, Manuel Marquez-Sanchez
  • Patent number: 6780201
    Abstract: Curly cellulose fibers having a high wet resiliency and a method of making high wet resiliency curly cellulose fibers with a chemically-assisted curling method. Polymeric reactive compounds are used to provide intrafiber crosslinking in curly fibers, thereby chemically setting the curl in the fibers, resulting in fibers that are stiff enough to not collapse upon wetting. These high wet resiliency curly cellulose fibers maintain a capillary structure during fluid acquisition and distribution, thus increasing absorbency.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: August 24, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Tong Sun, Jeffrey Dean Lindsay
  • Publication number: 20030172464
    Abstract: A process of forming improved cellulosic fibers, fibrous compositions containing cellulosic fibers, and absorbent articles comprising such compositions are disclosed. In the process, liquid ammonia penetrates cellulosic fibers in a pressurized environment, and when the pressure is released, an explosive process produces cellulosic fibers having unique structure and properties. The high pressure liquid ammonia treatment introduces a significant curl into the fiber and introduces a smooth, soft, silky feel to the fiber not present in conventional cellulosic fibers. Such fibers are particularly useful in tissue, wipes, distributive layers, fiber mats, filter papers, and other porous articles.
    Type: Application
    Filed: January 29, 2003
    Publication date: September 18, 2003
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventors: Sheng-Hsin Hu, David H. Hollenberg, Yong De Yao
  • Publication number: 20030150065
    Abstract: A process of forming improved cellulosic fibers, fibrous compositions containing cellulosic fibers, and absorbent articles comprising such compositions are disclosed. In the process, liquid ammonia penetrates cellulosic fibers in a pressurized environment, and when the pressure is released, an explosive process produces cellulosic fibers having unique structure and properties. The high pressure liquid ammonia treatment introduces a significant curl into the fiber and introduces a smooth, soft, silky feel to the fiber not present in conventional cellulosic fibers. Such fibers are particularly useful in tissue, wipes, distributive layers, fiber mats, filter papers, and other porous articles.
    Type: Application
    Filed: July 30, 2002
    Publication date: August 14, 2003
    Inventors: Sheng-Hsin Hu, David H. Hollenberg, Yong De Yao
  • Publication number: 20030019047
    Abstract: Disclosed is a simple, economical and safe method of producing cellulose fibers with the use of a cold-pad-batch process. The method comprises adding alkali into fibers or fiber goods at least partially comprising cellulose diacetate fibers. In addition to exhibiting physical properties similar to those of viscose rayon fibers, the cellulose fibers are provided with an excellent sense of shari, which can be applied in cloth.
    Type: Application
    Filed: January 4, 2002
    Publication date: January 30, 2003
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Ik Soo Kim, Jong Soo Ahn, Byoung Hak Kim, Jae Kyu No
  • Patent number: 6488809
    Abstract: This invention relates to the process of manufacture of resin treated mercerized cellulose fibers and fibrous products prepared therefrom and is directed particularly to a method of improving permeability and bulking properties and reducing water retention value (WRV) of a conventional high permeability bulk pulp. The invention also includes the improved cellulose fibers, cellulosic sheet materials containing said fibers, and products therefrom (such as automotive oil and air filters).
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: December 3, 2002
    Assignee: BKI Holding Corporation
    Inventors: Arthur F. Phillips, Susan L. H. Crenshaw, Ellen A. Grimes, Whitten R. Bell
  • Publication number: 20020065423
    Abstract: In a process for removing the paint from plastic components provided with coats of paint, the plastic components are first crushed to a bulk material size of the crushed plastic pieces. The plastic pieces are subsequently mixed with a paint removing agent reducing the adhesion of the coats of paint to the plastic pieces, and circulated by means of a conveyor screw. The paint removing agent is formed in this connection by an emulsion consisting of at least one benzyl-substituted alkanol and an alkyl-glycol acetate or N-alkyl-pyrrolidone with an aqueous lye, which can not be completely mixed. The mixing ratio for mixing the individual components is selected so that it is in the range of a mixing gap. After the paint removing agent has acted upon the painted plastic pieces, a solid substance is added to the paint remover so that the further steps of the method can be carried out in a dry state.
    Type: Application
    Filed: October 23, 2001
    Publication date: May 30, 2002
    Inventor: Peter Wiedemann
  • Patent number: 6319288
    Abstract: A blend is disclosed containing formamidinesulfinic acid, an scale-inhibiting agent that can be neutral or acidic, and/or finely divided silica having good flowability to be used for the purpose of reductive bleaching in the paper and textile industries, whereby, in particular, polcarboxylates and polyacrylic acids are employed having a content of about 10% of a polyamide in the form of a copolymer.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: November 20, 2001
    Assignee: Degussa AG
    Inventors: Harald Jakob, Bernd Hopf
  • Patent number: 6284348
    Abstract: Disclosed herein is an ink-jet printing cloth composed of cellulose fibers, wherein the specific gravity of the cloth in an absolute dry condition is controlled within a range of from 1.45 to 1.49 by mercerization.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: September 4, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mariko Suzuki, Masahiro Haruta, Shoji Koike, Koromo Shirota, Aya Takaide, Tomoya Yamamoto
  • Patent number: 6245117
    Abstract: A compound A expressed by the following chemical formula (wherein R denotes an organic group including a hydrocarbon group, an alkanolamine group, an aromatic group and/or a group including a polyoxyalkylene adduct; m denotes a positive integer of 0 to 3 and can be represented by a plurality of values; and k denotes a positive integer of 2 to 6) and containing a chlorohydrin group at its terminal is brought into contact with cellulose fibers in an aqueous phase in the presence of an alkali metal compound so that the cellulose fibers are crosslinked at the molecular level. Thus, the crosslinking reaction occurs on the surface of the cellulose fiber, and the anti-fibrillation effect and deep dyeing effect can be obtained without damaging the soft feeling of the cellulose fiber.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: June 12, 2001
    Assignee: Ipposha Oil Industries Co., Ltd.
    Inventors: Sadahiko Nishikawa, Shigenobu Fujita, Kazuhide Tsuji
  • Patent number: 6203577
    Abstract: A method for shrink-proofing a cellulosic fiber textile that involves liquid ammonia treatment, hot water or alkali treatment under tension or under no tension, and with optional resin treatment.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: March 20, 2001
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Yuichi Yanai, Takayuki Hirai, Masayoshi Oba, Kiyoshi Ikeda, Yasushi Takagi, Takeo Ishikawa, Kazuhiko Harada, Hirotaka Iida, Ryuichi Ito, Osamu Hasegawa
  • Patent number: 6042616
    Abstract: A method for finishing a cellulose fiber-containing textile fabric comprises treating a cellulose fiber-containing textile fabric with liquid ammonia, applying a resin finishing agent to said fabric, subjecting subsequently to either or both of a hot calendering treatment and a heat treatment, and finally treating the resultant fabric with hot water. The resultant fabric keeps its shape stability including a crease or shrink resistance when washed, without involving any problem on residual formaldehyde.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: March 28, 2000
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Yuichi Yanai, Masayoshi Oba, Kazuhiko Ichimura, Yasushi Takagi, Kazuhiko Harada
  • Patent number: 6042767
    Abstract: In a process for manufacturing a cellulosic yarn by spinning of a solution of cellulose in a tertiary amine oxide, the solution possibly containing water and/or a stabilizer, to form fibers or filaments, coagulating, washing, and drying, the yarns are treated prior to drying with an aqueous alkaline solution for a period less than 20 seconds.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: March 28, 2000
    Assignee: Akzo Nobel NV
    Inventors: Abdulmajid Hashemzadeh, Peter Raidt
  • Patent number: 5910279
    Abstract: Creases are formed in a cellulosic fiber textile by treating the fiber textile with liquid ammonia, creasing the fiber textile, and treating the fiber textile with hot water or alkaline solution substantially simultaneous with or subsequent to the creasing step. Fully durable creases are formed in the cellulosic fiber textile without detracting from strength.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: June 8, 1999
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Yuichi Yanai, Takayuki Hirai, Masayoshi Oba, Kiyoshi Ikeda, Yasushi Takagi, Takeo Ishikawa, Kazuhiko Harada, Hirotaka Iida, Kazuhiko Arakawa, Masazumi Ii, Yuzo Nakamura
  • Patent number: 5882356
    Abstract: The fibrillation tendency of solvent-spun cellulose fiber is reduced by treating the previously dried fiber with a chemical reagent containing at least two functional groups which are reactive with cellulose and which are electrophilic carbon--carbon double bonds, particularly vinyl sulfone groups, or precursors thereof or electrophilic three-membered heterocyclic rings or precursors thereof. The chemical reagent is preferably colorless and is preferably applied to the fiber from aqueous solution. The fiber may be contained in a woven or knotted fabric.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: March 16, 1999
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventor: Christopher David Potter
  • Patent number: 5858021
    Abstract: Disclosed is a process for treating cellulosic fibers using an alkali metal hydroxide. The process first prepares the cellulosic fibers as a high consistency mixture with water and then adds an alkali metal hydroxide. The high consistency process is quite efficient and has been found to produce cellulosic fibers that are essentially uniformly treated. Also disclosed is a handsheet prepared from the treated cellulosic fibers for use is disposable absorbent products.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: January 12, 1999
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Tong Sun, Yong De Yao, Sheng-Hsin Hu
  • Patent number: 5837009
    Abstract: A method for cotton purification is described, where the cotton is subject to a purification process in water. The process solution contains calcium hydroxide and a non-ionic detergent wetting agent. Following this processing the cotton is rendered hydrophilic. The cotton is carried in a net with simultaneous removal of the adsorbed processing solution. It is then washed and bleached with H.sub.2 O.sub.2 or ClONa in a two-stage process. The effluent water is processed by anaerobic digestion in the thermophilic region for the production of biogas. The effluent water from the anaerobic digestion process is further processed by aerobic biological treatment. The whole process operates with energy self-sufficiency without resulting in environment pollution. Finally, a high purity cotton is produced with high water absorptivity which is suitable for spinning for the production of quality cotton yarns suitable for weaving quality fabrics or dyeing.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: November 17, 1998
    Assignee: Innoval Management Limited
    Inventor: George N. Valkanas
  • Patent number: 5779736
    Abstract: The present invention discloses a process for producing a fibrillated cellulose acetate fiber comprising contacting cellulose acetate fiber with a strong base solution at conditions sufficient to remove greater than about 5% of bulk acetyl groups from said cellulose acetate fiber. Modified cellulose acetate staple fiber comprising an outer layer of regenerated cellulose in which at least about 5% of the acetyl groups are removed on an overall fiber basis are also disclosed. Paper products incorporating said fibers are also disclosed.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: July 14, 1998
    Assignee: Eastman Chemical Company
    Inventors: Tim J. Frederick, Melvin G. Mitchell, Lee R. Partin, Alan K. Wilson, Richard D. Neal
  • Patent number: 5752981
    Abstract: Finishing agent for the finishing treatment of textile fiber materials of natural origin and/or of regenerated cellulose and/or of synthetic fibers, containing i) a fine-grained, inorganic abrasive, ii) an anionic or non-ionic, low-foaming wetting agent, and iii) a non-ionic carrier, and the use of this finishing agent in the finishing treatment of textile fiber materials, whereby special surface effects are obtained.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: May 19, 1998
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Saverio Fornelli
  • Patent number: 5709810
    Abstract: Described are mercerization wetting agent compositions comprising(a) a compound of the formula ##STR1## (b) a phosphoric ester of the formula ##STR2## The mercerization wetting agent compositions of the invention are notable for good wetting power in a mercerizing bath.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: January 20, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Albert Stehlin, Thomas Maier
  • Patent number: 5709716
    Abstract: The color properties (i.e., the freedom from frosted ppearance, especially in dyed form) of lyocell fibre, in particular in fabric form, can be improved by mercerizing the fabric. The hand of the mercerized fabric can be softened to a marked degree by treatment with a cellulase enzyme.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: January 20, 1998
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventor: James Martin Taylor
  • Patent number: 5667865
    Abstract: A terry fabric and method of forming a terry fabric are provided in which a ground fabric is formed of ground yarns while terry yarns are interlaced with the ground yarns to form terry loops with a height substantially greater than normal (a terry yarn length greater than 4.25 inches per linear inch of ground fabric), the terry yarns being formed of singles yarns plied together with a ply twist lower than normal (ply twist lower than seven (7) turns per inch) and the singles yarns having a lower than normal twist multiple (less than 3.75). The terry fabric is partially mercerized during finishing to soften the fabric, a softener is applied of no more than about 0.4% by weight and a wetting agent is also applied to increase even further the rate of absorbency thereof.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: September 16, 1997
    Assignee: Fieldcrest Cannon, Inc.
    Inventors: Timothy James Jackson, Aaron Douglas Owens, Milledge Delonia Ford, Richard Ward Rutland, Charles Henry Shuping
  • Patent number: 5538648
    Abstract: A process for improving the removal of undesired substances from a cellulosic textile material comprisingi) treating the textile material with an aqueous solution comprisinga) citric acid,b) an alkali metal or ammonium salt of a gluconic acid, andc) optionally a mineral acid (preferably in a minor amount).
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 23, 1996
    Assignee: Sandoz Ltd.
    Inventors: Dominik B ucheler, Saverio Fornelli
  • Patent number: 5494486
    Abstract: Mercerization wetting compositions comprising a compound of the formula ##STR1## where R.sub.1 is hydroxyl or --SO.sub.3 M,R.sub.2 is C.sub.4 -C.sub.18 alkyl,M is an alkali metal,n is 0 or 1, andm is from 2 to 6 are described. The mercerization wetting compositions of the invention are high-wetting and low-foaming. Moreover, the compounds are readily biodegradable.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: February 27, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Albert Stehlin, Thomas Maier
  • Patent number: 5472665
    Abstract: A method for removing impurities and potentially toxic substances from cellulose is disclosed. The method comprises the following steps: (a) immersing cellulose containing organic extractables in one or more acid baths so as to remove traces of organic extractables; (b) immersing the cellulose in a water bath; (c) immersing the compressed cellulose in an alkaline bath; and (d) sterilizing the treated cellulose using pressurized steam.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: December 5, 1995
    Inventors: Paul M. Rosofsky, Seymour Gilbert
  • Patent number: 5464547
    Abstract: Mercerization wetting compositions comprising a compound of the formula ##STR1## where R.sub.1 is hydroxyl or --SO.sub.3 M,R.sub.2 is C.sub.4 -C.sub.18 alkyl,M is an alkali metal,n is 0 or 1, andm is from 2 to 6 are described. The mercerization wetting compositions of the invention are high-wetting and low-foaming. Moreover, the compounds are readily biodegradable.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: November 7, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Albert Stehlin, Thomas Maier
  • Patent number: 5372611
    Abstract: A liquid alkali composition for use in fiber reactive dyeing of cotton and cotton blended fabrics or the like. The liquid alkali is a water-based solution of an alkali metal hydroxide and an alkali metal silicate. Preferably the composition is an aqueous mixture of potassium hydroxide and sodium silicate. In the most preferred embodiment the composition includes 35 wt % potassium hydroxide at a 45 wt % concentration, 25 wt % sodium silicate at 50.degree. Baume, 5 wt % of a borate, and the balance water. The resulting solution has a high enough pH to achieve reaction between the dye and fiber but is sufficiently buffered to achieve this reaction slowly so that the fiber reactive dyes fix in a level, uniform fashion.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: December 13, 1994
    Assignee: Apollo Chemical Corporation
    Inventors: Nick J. Christie, Samuel G. Jones
  • Patent number: 5196032
    Abstract: 1. A process comprisinga) a two liquor process for treating a cellulosic substrate with alkali and applying a dye to the substrate characterized by pad treating the substrate with alkali and dyeing by pad dyeing or printing with a reactive dyestuff without an intermediate washing step; orb) a one liquor process for treating a cellulosic substrate with alkali and a dye characterized in that the substrate is pad treated with alkali and reactive dye.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: March 23, 1993
    Assignee: Sandoz Ltd.
    Inventor: Christian Oschatz
  • Patent number: 5139530
    Abstract: Anionically dyeable smooth-dry crosslinked cellulosic materials are produced by treatment of methylolamide crosslinked cellulosic materials with an alkali swelling agent such as sodium hydroxide prior to dyeing. Attainable color strength is dependent upon both the concentration and the contact time of the alkali swelling agent with the cellulosic material. Types of usable anionic dyes include acid, direct, and reactive dyes. The cellulose-containing material may be in the form of fibers, threads, linters, roving, fabrics, yarns, slivers and paper.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: August 18, 1992
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Eugene J. Blanchard, Robert M. Reinhardt
  • Patent number: 5049159
    Abstract: This invention is concerned with a process for producing deodorizing cellulose fibers on which a considerable amount of copper hydroxide and/or zinc hydroxide is fixed highly strongly, which process is characterized in that cellulose fibers are allowed to contact with a colloidal solution of copper hydroxide and/or zinc hydroxide prepared by adding an alkaline substance to an aqueous solution of a water-soluble copper compound and/or a water-soluble zinc compound. Deodorizing fibers so obtained are capable of effectively removing malodorous gaseous substances, such as hydrogen sulfide, ammonia, methyl mercaptan, etc., and exhibit excellent deodorizing effects. In addition, the deodorizing fibers, although they can be an excellent deodorizing material as they are, are excellent in workability and hence can be used in the form of a shaped product, including, e.g., granules, sheets, etc. They can therefore be applied to various uses in the field of deordorization.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: September 17, 1991
    Assignee: Kohjin Co., Ltd.
    Inventors: Keizou Yamaji, Natumi Satou, Eiji Morisaki
  • Patent number: 5047064
    Abstract: A method is provided for improving the dyeability and other properties of cellulosic materials, especially knitted cotton goods, wherein the material is impregnated with an aqueous liquor containing an effective amount of potassium hydroxide and preferably also an alkali metal silicate, a wetting agent and a sequestering agent, at a temperature of at least about 7.degree. C. (45.degree. F.). The application of tension is not necessary and the treatment is particularly useful for tubular knitted goods.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: September 10, 1991
    Assignee: Sandoz Ltd.
    Inventor: Angelo Rizzardi
  • Patent number: 5013327
    Abstract: Mercerizing and/or causticizing wetting agent compositions containing alkali metal and/or ammonium salts of 2-ethyl hexyl sulfate, a mixture of terminally blocked polyethers and, optionally, trialkyl phosphates.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: May 7, 1991
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Bernd Wahle, Faize Selen
  • Patent number: 4997934
    Abstract: This invention relates to an improvement to a process for synthesizing cellulose aminomethanate wherein cellulose is steeped in an aqueous urea containing solution, dried to form an intimate mixture of cellulose and urea of known composition, and heated to form the cellulose aminomethanate; the improvement comprising, heating the mixture to a temperature above about 125 degrees centigrade, measuring the weight loss of the mixture during heating, comparing the measured weight loss of the mixture during heating to the weight of an equivalent amount of ammonia released in accord with the reaction path:Cell-OH+CO(NH.sub.2).sub.2 .fwdarw.Cell-OCONH.sub.2 +NH.sub.3continuing heating until the total measured weight loss corresponds to the total weight of an amount of ammonia released in the reaction when from about 30 to about 100% of the total weight of urea present in the mixture reacts with cellulose.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: March 5, 1991
    Assignee: Teepak, Inc.
    Inventor: Matiur Rahman
  • Patent number: 4941884
    Abstract: Woven fabrics from blends of high and low modulus fibers provide comfort plus high durability to hard surface abrasion.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: July 17, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James R. Green
  • Patent number: 4742589
    Abstract: A method for continuous liquid treatment of a cloth comprising transporting a cloth soaked with a treating solution continuously under width expansion by the use of a tenter while subjecting the cloth successively to wet heat treatment by jetting high temperature hot water thereto and drying the resultant cloth by jetting hot blast thereto. Under certain circumstances, it is preferably to swell the cloth by applying high temperature hot water thereto after the cloth is soaked with the treating solution for expanding width of the cloth and/or to dry the cloth tentatively before the wet heat treatment thereof for preventing the peeling off of the treating agent applied to the cloth.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: May 10, 1988
    Assignee: Sando Iron Works Co., Ltd.
    Inventors: Yoshikazu Sando, Hiroshi Ishidoshiro
  • Patent number: 4583984
    Abstract: The present invention concerns improving the properties of cellulose carbamate fibres. The wet strength properties in particular can be improved by treating the fibres with alkalis or organic bases, aiming to reduce the number of carbamate groups. The procedure may also be applied in the manufacturing of regenerated cellulose fibres.
    Type: Grant
    Filed: October 28, 1983
    Date of Patent: April 22, 1986
    Assignee: Neste Oy
    Inventors: Olli Turunen, Jouko Huttunen, Kurt Ekman, Vidar Eklund, Leo Mandell
  • Patent number: 4568349
    Abstract: The invention relates to a process for alkali-dry treating cellulosic fibre goods comprising the steps of(a) treating the goods with an aqueous caustic soda solution of 18.degree.-26.degree. Baume, followed by(b) drying the treated goods under tension without an intermediate rinsing or neutralization step.The aqueous caustic soda solution used in step (a) may further contain a lubricant and wetting agents.
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: February 4, 1986
    Assignee: Sandoz Ltd.
    Inventor: Angelo Rizzardi
  • Patent number: 4520520
    Abstract: In a process for mercerizing cellulosic cloth by treating the cloth with 3-10% caustic solution at the boil in a boilout stage, washing the cloth after treatment in the boilout stage and treating the washed cloth with 20-25% caustic in a mercerizer, an improvement comprises the steps of:(a) collecting overflow from the boilout stage, contaminated with additives used in weaving or knitting the cloth;(b) treating the contaminated overflow from the boilout stage by hyperfiltration to produce a recovered fraction of relatively pure caustic solution and a concentrate fraction containing additives used in weaving or knitting the cloth;(c) washing the cloth after treatment in the boilout stage with the recovered fraction of relatively pure caustic from step (b).
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: June 4, 1985
    Inventors: Lawton L. Johnston, Craig A. Brandon
  • Patent number: 4494952
    Abstract: A wetting agent, in particular for mercerizing cotton and cotton blend fabrics, which contains(a) sulfates of a fatty alcohol having 6 to 18 carbon atoms,(b) phosphates of a monoalcohol having 4 to 12 carbon atoms,(c) alcohols having 6 to 18 carbon atoms or condensation products thereof with paraformaldehyde,(d) a hydrotropic solubilizing agent and optionally(e) an adduct of an organopolysiloxane and ethylene oxide and/or propylene oxide and/or(f) a complexing agent.The wetting agents are distinguished by great wetting power and low foaming, not only in the course of the mercerization but also in the recovery of liquor from mercerizing washing baths.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: January 22, 1985
    Assignee: Ciba-Geigy Corporation
    Inventors: Heinz Abel, Christian Guth
  • Patent number: 4486197
    Abstract: A fabric containing viscose fibres is subjected to cross-linking followed by mercerization and then generally further cross-linking. It is possible to obtain products having good dyeability soft handle and good wet and dry crease resistance.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: December 4, 1984
    Assignee: Lintrend Licensing Company Limited
    Inventor: Frederick R. W. Sloan
  • Patent number: 4475917
    Abstract: A process for producing a regenerated cellulose fiber having a good hand and a good shrink resistance characterized by attaching a liquid not readily soluble in liquid ammonia and adsorbable on regenerated cellulose fiber to the surface of regenerated cellulose fiber or attaching a polymer to the surface of regenerated cellulose fiber in the form of a film or not carrying out the surface treatment mentioned above, and adjusting the moisture content of said regenerated cellulose fiber to 5% or more based on the absolute dry weight of said fiber, and thereafter impregnating said regenerated cellulose fiber with liquid ammonia, and subsequently removing the ammonia from the regenerated cellulose fiber.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: October 9, 1984
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Takeo Ohshima, Shigeki Ohtani
  • Patent number: 4451262
    Abstract: A process for finishing cellulose-containing fibrous material, in which (a) commercially available textile finishing agents are applied to the fibrous material and fixed, (b) the material is subsequently washed and dried, if necessary, and (c) the textile material is after-treated with liquid ammonia.As a result of the after-treatment with liquid ammonia, the mechanical properties of the finished fibrous material, from the textile point of view, and in particular the tear strength and the handle, are considerably improved.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: May 29, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Fritz Mayer, Svein Holtermann